Denso Alternator 12V 140A DXA4091

This Denso alternator is a new rotating electrical unit with a 12V system, 140A power rating, and part number DXA4091. It is listed as an OE product and carries OEM number RE46608, which makes part number checking a sensible first step when matching it to a replacement application.

Key build details include an internal regulator, 8 groove pulley section, 62mm pulley outside diameter, and a single leg alternator mount. The unit also has a pin code of IR7, mount centre to centre of 169mm, and a mount leg thickness of 58mm.

It is supplied as each unit and is marked no warranty. As with any alternator replacement, the safest approach is to compare the part number, mount style, pulley configuration, and electrical specification before ordering.

Key Features

• New alternator
• OE product
• 12V system
• 140A output
• Internal regulator
• 8 groove pulley

Specifications

• Brand: Denso
• Part No.: DXA4091
• OEM Number: RE46608
• Type: Alternator
• Voltage: 12V
• Power Rating: 140A
• Regulator Type: Internal
• Pulley Section: 8 groove

Fitment guidance

• Supported by the supplied application data for John Deere 8100.
• Supported by the supplied application data for John Deere 8560.
• Supported by the supplied application data for John Deere 8570.
• Fitment data also references John Deere Series 7000, 7010, 8, 8000, 8010, 8020, 9000 and 9020 applications.

Application and Buying Notes

The most important checks on this alternator are the part number DXA4091, OEM number RE46608, and the physical mounting details. The alternator uses a single leg mount, 169mm mount centre to centre, and 58mm mount leg thickness, so matching the bracket and bolt spacing is essential before fitting.

Electrical compatibility matters as much as the mounting pattern. This unit is a 12V alternator with a 140A output and internal regulator, so it should only be matched to systems that call for those specifications. The pulley is an 8 groove design with a 62mm outside diameter, which should also be compared against the existing unit.

Because the listing is marked no warranty, it is worth confirming every identifying detail before purchase. The pin code is IR7, the shaft dimension is 17, and the unit is listed as new. Those details help separate similar-looking alternators that may not interchange even when the overall shape appears close.

If you are cross-checking against a removed unit, compare the old alternator’s tag, pulley, plug style, and mount layout rather than relying on appearance alone. Alternators can share a family resemblance while differing in regulator type, pulley section, or mounting dimensions, and those are the details that determine whether the replacement will suit the machine.

Before supply, the safest approach is to confirm the original unit details against the listed part number, voltage, output rating, mounting arrangement, and pulley configuration. That checking process is standard practice in the parts trade because visually similar units can still differ in service-critical ways.

For workshop, fleet, and equipment applications, accurate identification of part number DXA4091 helps avoid unnecessary freight, additional labour, and vehicle or machine downtime. Where the application is not straightforward, the original unit, OEM reference, or workshop records should be used as the primary confirmation point.

Relevant published details for this unit include Type ALTERNATOR, Unit of Measure EACH, Warranty No Warranty, Pin Code IR7, Pulley Outside Diameter 62mm, Regulator Type Internal, Voltage 12, Mount Cnt to Cnt 169mm, Insulated Return No, Shaft Dimension 17.

Additional published details for cross-checking include Product Group 1 ROTATING ELECTRICAL, Part No. DXA4091, Brand DENSO, Description Denso Alternator 12V 140A, Mount Leg Thickness 58mm, Power Rating (Amp) 140, Pulley Section 8 Groove, Suits Unit Make Denso, Alternator Mount Single Leg, New / Reman. New.

Denso Alternator 12V 140A. Part number DXA4091 should be checked first. Listed voltage is 12. Listed output rating is 140. These details form the core reference points used by parts interpreters when confirming the correct replacement.

Mount style is Single Leg. Regulator type is Internal. Pulley configuration is 8 Groove. Those physical and electrical details should line up with the original unit before the replacement is approved for fitment.

For part number DXA4091, the normal identification sequence is part number, electrical rating, mounting arrangement, connector or terminal style, and pulley or drive details. Using those checkpoints helps confirm that the listed unit matches the service requirement rather than only looking similar.

For a alternator in workshop, fleet, trade, agricultural, or construction service, the listed voltage 12 and output 140 should be checked carefully. Incorrect selection can affect installation time, return freight, and equipment availability.

Compatibility note: Confirm fitment by matching part number DXA4091 and OEM number RE46608 against the vehicle application, mounting pattern, pulley configuration, and 12V 140A electrical specification before ordering.

FAQ

What is the part number for this alternator?

The part number is DXA4091. The OEM number listed is RE46608. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.

Is this alternator new or remanufactured?

It is listed as new. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.

What electrical specification does it have?

It is a 12V alternator with a 140A power rating and an internal regulator. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.

What pulley setup does it use?

It has an 8 groove pulley section and a 62mm pulley outside diameter. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.

What mount details are supplied?

The alternator has a single leg mount, 169mm mount centre to centre, and a 58mm mount leg thickness. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.

Is fitment listed for any John Deere applications?

Yes. The supplied fitment data references John Deere 8100, 8560, 8570, and several John Deere series applications including 7000, 7010, 8, 8000, 8010, 8020, 9000 and 9020. For this listing, part number DXA4091 is the main reference point. Listed voltage is 12. Listed output rating is 140. Published fitment references include JOHN DEERE 8100, JOHN DEERE 8100 2014, JOHN DEERE 8560. These details should still be checked against the original unit before ordering.